/// <summary>
/// 获取一个匹配数据
/// </summary>
/// <param name="key">关键字</param>
/// <param name="isValue">数据匹配器,禁止数据库与锁操作</param>
/// <returns>匹配数据,失败返回null</returns>
public ReturnValue <valueType> FirstOrDefault(keyType key, Func <valueType, bool> isValue)
{
if (isValue != null)
{
FindTask task = new FindTask(this, key, isValue);
counter.SqlTable.AddQueue(task);
return(task.Wait());
}
return(ReturnType.ArgumentNull);
}
/// <summary>
/// 获取一个匹配数据
/// </summary>
/// <param name="key">关键字</param>
/// <param name="isValue">数据匹配器,禁止数据库与锁操作</param>
/// <returns>匹配数据,失败返回null</returns>
public valueType FirstOrDefault(keyType key, Func <valueType, bool> isValue)
{
if (isValue == null)
{
throw new ArgumentNullException();
}
FindTask task = new FindTask(this, key, isValue);
counter.SqlTable.AddQueue(task);
return(task.Wait());
}